Lenovo Y500 HDD question?

Hello, I just recently got myself the Lenovo Y500 Ideapad with the 1TB HDD + 16GB SSD. Well, I wanted MOAR SSD so I got a 256GB SSD. I migrated Windows 8 and all other data from the Stock HDD to my new SSD. I removed the stock HDD and checked to see if everything booted properly with just the SSD plugged in. It all checked out fine so I put the SSD in the slot where the stock HDD originally was and wanted to put the stock HDD in the Ultrabay. This is where I have a problem... For some reason, although my laptop boots fine, it can't recognize that the stock HDD is even in the laptop. Whether I put it in the Ultrabay or the original caddy. I gave the stock HDD to my brother to see if it worked for him, and it did. So I asked him if he could back-up then format it for me. (Thinking that may be the problem) So he did that for me and I just now put it in the Ultrabay and still it isn't being detected. I put it in it's original caddy, and guess what? Still not being detected. So although it is being detected on my brother's desktop, it isn't being detected in my laptop even though it's been formatted and wiped clean of any data. Any help would be greatly appreciated.